Apparatus pob cutting pipes



Dec. 11,1923; 1,476,983

' P. J. KING APPARATUS FOR CUTTING PIPES Filed April 26 1921 PETE? LL K1115 Elli Patented Dec. 11, 1923.

PETER J. KING, OF IMILWAUKEE, WISCONSIN.

APPARATUS FOR CUTTING PIPES.

v Application filed April 26, 1921.

To (,iZZ whom it may concern:

Be it known that I, Pn'rnn J. KING, a citi Zen of the United States, and residentof lviilwaulree, in the county of Milwaukee and State of Wisconsin, have invented certain and useful Improvements in Apparatus for Cutting Pipes; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to an improved apparatus for cutting pipes, and is particularly useful where it is desired to cut a pipe which projects from a flat surface, and it is desired to cut it flush with said surface.

it is particularly useful, for example, in cutting soil pipe after the same has been set in. position, and the floor laid around it.

In the process of installing the plumbing in modern houses, it has been customary to install the same including the soil pipe and suhsequentl to lay the tile floor with a cement touinlation around the same. Hitherto it has been necessary to measure accurately the length of pipe to be used, in order to ternii "ate at the level of the floor which is to be la This method required extreme accuracy, and moreover cement workers cannot be depended upon to lay the foundation for the floor at the exact height necessary to bring the floor accurately to the predeterl'l'lll'ltCl level.

li; is the general object of my invention i provide an apparatus for cutting the pipe after the door has been finished, thereby maki g poss ble to cut the pipe accurately and siothly at the surface of the floor.

In practicing the invention, therefore, the pipe will first be cut somewhat longer than it will ultimately be left.

in describing my invention reference will. he had to the accompanying drawings, in which:

Figure l is a vertical sectional 'iew through a soil pipe, which is being cut in :=.cc n:dance with my invention, and

igure 2 is a horizontal view looking up wardly from the line 2--2 of Figure 1.

he numeral 5 designates the end of a soil pipe, which has been left projecting upwardly above the cement or tile floor 6. In carrying out my invention, I provide a cylindrical plug which is made up of a plurality of sections 7, which together form a hollow cylinder which will normally be easily inserted within the pipe 5. These sections are Serial No, 464,670.

provided with a plurality of circumferential grooves 8, within which are seated the springs 9. These springs are tensioned so to exert an inward pressure on the sections 7. The plug is provided with a central tapered opening extending axially therethrough, and within this opening fits a tapered core 11.

Mounted at one end of the cylinder is a sleeve 12, which is provided at its outer end with an abutting surface such as that provided by the flange l3. Extending centrally through the core 1]. and the sleeve 12 is a bolt 14L, provided at its outer end with the threaded port-ion 15. On this threaded portion is engaged a nut 16, which abuts the flange 13. Thus by turning the nut 16, the core 11 may be drawn into the cylindrical plug to expand the same. At the end of the threaded portion 15, I attach a member 17 of any suitable form for supporting or carrying the device.

After the floor has set and the pipe is to be out the mechanic simply inserts the plug into the pipe to the position shown in Figure 1, and turns the nut 16 until the outer surface of the plug firmly engages the .inside of the pipe. He may then cut the pipe with a hammer and cold chisel as shown at 18. During this process, the plug will absorb or damp the vibration of the pipe.

The core 11 may be secured to the bolt 14 by any suitable means, or, if desired, the bolt and core may be made in one integral piece. In order to obviate the possibility of the plug being lost in the pipe, it may also be found desirable to make either the nut 16 or the ring 17 larger than the diameter of the pipe. It will also be obvious that other minor modifications may be made in the structural details of the device, without departing from the spirit of the invention as set forth in the claim.

I claim as: my invention:

A. device for use in cutting drain pipe after such pipe has been secured in a pro jecting manner in a cemented floor, said device comprising a tapered conical member, a plurality of annular members together form ing a substantially complete cylinder having an outer cylindrical surface adapted to conact with the inner surface. of the pipe and having a conical inner surface contacting with said conical member, a threaded rod terminating in a suspension member adapted to be manually held, a sleeve slidably mounted of said pipe to damp out vibration when upon said rod and bearing at one end against said pipe is chiseled. 10

the annular member, and a wing nut thi'ead- In testimony that I claim the foregoing 1 ed upon said rod and bearing against said have hereunto set my hand at Milwaukee,

I sleeve, whereby said device may be freely in the county of Milwaukee and State of lowered into said projecting pipe and there- Wisconsin. after the nut tightened to force said annular member into contact with the inner surface PETER J. KING. 

